More alternative notations for execute action

    execute(...)
    execute[...]
    execute~...~
    execute!...!
    execute@...@
    execute#...#
    execute$...$
    execute%...%
    execute^...^
    execute&...&
    execute*...*
    execute:...:
    execute;...;
    execute/.../
    execute|...|

src/options.go

@@ -377,10 +377,16 @@ func parseTheme(defaultTheme *curses.ColorTheme, str string) *curses.ColorTheme
 	return theme
 }
 
+var executeRegexp *regexp.Regexp
+
 func parseKeymap(keymap map[int]actionType, execmap map[int]string, toggleSort bool, str string) (map[int]actionType, map[int]string, bool) {
-	rx := regexp.MustCompile(
-		":execute(\\([^)]*\\)|\\[[^\\]]*\\]|/[^/]*/|:[^:]*:|;[^;]*;|@[^@]*@|~[^~]*~|%[^%]*%|\\?[^?]*\\?)")
-	masked := rx.ReplaceAllStringFunc(str, func(src string) string {
+	if executeRegexp == nil {
+		// Backreferences are not supported.
+		// "~!@#$%^&*:;/|".each_char.map { |c| Regexp.escape(c) }.map { |c| "#{c}[^#{c}]*#{c}" }.join('|')
+		executeRegexp = regexp.MustCompile(
+			":execute(\\([^)]*\\)|\\[[^\\]]*\\]|~[^~]*~|![^!]*!|@[^@]*@|\\#[^\\#]*\\#|\\$[^\\$]*\\$|%[^%]*%|\\^[^\\^]*\\^|&[^&]*&|\\*[^\\*]*\\*|:[^:]*:|;[^;]*;|/[^/]*/|\\|[^\\|]*\\|)")
+	}
+	masked := executeRegexp.ReplaceAllStringFunc(str, func(src string) string {
 		return ":execute(" + strings.Repeat(" ", len(src)-10) + ")"
 	})
 
@@ -484,7 +490,7 @@ func isExecuteAction(str string) bool {
 	}
 	b := str[7]
 	e := str[len(str)-1]
-	if b == e && strings.ContainsAny(string(b), "/:;@~%?") ||
+	if b == e && strings.ContainsAny(string(b), "~!@#$%^&*:;/|") ||
 		b == '(' && e == ')' || b == '[' && e == ']' {
 		return true
 	}

src/options_test.go

 package fzf
 
 import (
+	"fmt"
 	"testing"
 
 	"github.com/junegunn/fzf/src/curses"
@@ -167,6 +168,12 @@ func TestBind(t *testing.T) {
 	checkString("echo (,),[,],/,:,;,%,{}", execmap[curses.AltA])
 	checkString("echo (,),[,],/,:,@,%,{}", execmap[curses.AltB])
 
+	for idx, char := range []rune{'~', '!', '@', '#', '$', '%', '^', '&', '*', '|', ':', ';', '/'} {
+		keymap, execmap, toggleSort =
+			parseKeymap(keymap, execmap, false, fmt.Sprintf("%d:execute%cfoobar%c", idx%10, char, char))
+		checkString("foobar", execmap[curses.AltZ+int([]rune(fmt.Sprintf("%d", idx%10))[0])])
+	}
+
 	keymap, execmap, toggleSort = parseKeymap(keymap, execmap, false, "f1:abort")
 	if toggleSort {
 		t.Errorf("toggleSort set")